<!DOCTYPE html>
<html>
  <head>
    <title>Column rule in scrollable multicol container</title>
    <style>
      body {
        margin: 0;
      }
    </style>
  </head>
  <body>
    <p>There should be <b>two</b> black squares below.</p>
    <div style="float:right; width:100px; height:100px; margin-right:95px; background:black;"></div>
    <div style="width:500px; margin:auto;">
      <div style="width:100px; height:100px; background:black;"></div>
    </div>
  </body>
</html>
